KR20110061995A - A puller adapter adjustable length with screw - Google Patents

Abstract

PURPOSE: A screw-adjustable adapter of a puller is provided to allow a worker to easily regulate the length of the adapter by turning the screw coupling part without using a hammer. CONSTITUTION: A screw-adjustable adapter of a puller, which is installed in a rod(13) connected to a cylinder(12) of a puller to regulate the length, comprises a nut-type adapter, a bolt-type adapter, and an insertion-type adapter. The nut-type adapter is connected to the rod head via a tap. The bolt-type adapter is thread-coupled to the nut-type adapter. The insertion-type adapter is inserted to the bolt-type adapter.

Description

Puller Adapter Adjustable Length with Screw

The present invention relates to a screw-adjustable adapter of a puller, and more particularly, to an adapter that does not take the manner of extending the adapter mounted on the hydraulic cylinder rod of the puller to an adapter having a fixed length as in the prior art. It is possible to adjust the length in a variable manner by the worker alone, the length is easy to adjust without the help of others, and relates to a screw-type adapter of a hydraulic puller excellent in safety and convenience.

In general, pullers are useful for disassembling the machine, and are often used to pull couplers, bearings, gears, and wheels out of axles or cases. Pullers are generally classified into hydraulic pullers using a hydraulic principle and screw pullers. Hydraulic pullers are quite convenient because their components are rather complicated and expensive, but they can be used to maximum effect with minimal force.

1 is a conceptual diagram of a general hydraulic puller. In FIG. 1, the hydraulic puller 10 exemplarily shows a state in which the gear 6 installed on the shaft 4 of the gear body 2 is separated. As shown in the figure, the hydraulic puller 10 has a structure in which two arms 18 are connected and assembled through an arm connector 14 and a connecting link 16 at one end of the cylinder 12. ) With the gear 6 actuated by the hydraulic line and the control means to actuate the cylinder 12 such that the end of the rod 13 or the end of the coupled adapter presses against the shaft 4 of the gear. The gear 6 is pulled out.

Figure 2 is a cross-sectional conceptual view showing the shape of the adapter according to the prior art. As shown in FIG. 2, the prior art adapter includes a first adapter 20, a second adapter 30, and a third adapter 40. The first adapter 20 is provided with a rod accommodating groove 21 for accommodating the end of the rod 13 connected to the cylinder 12 of the hydraulic puller, and the second adapter 30 has a first adapter accommodating groove ( 31) is provided, the third adapter is provided with a second adapter receiving groove (41).

The operator adjusts the length of the adapter according to the size and shape of the object to be pulled out by the puller. Each of the three types of adapters may be used independently of the rod 13, and the first adapter 20 and the third adapter 40 may be coupled to the rod, or the second adapter 30 and the third rod may be coupled to the rod. Only the adapter 40 may be used in a connected state, or may be used in a state in which all of the first, second, and third adapters are connected to the rod.

However, the above-described adapter in the prior art had the following problems.

First of all, in order to connect several adapters, it is necessary to have the help of other people other than the worker, and it is difficult for the worker to handle alone. During the operation, the pressure of the adapter is close to 100 tons, so if the force acting out of the center of the adapter, the adapter bounces. This entails the risk of a safety accident.

In addition, the conventional adapters have their respective lengths, so depending on the size and shape of the object to be removed, even if the adapters are all installed on the rod of the hydraulic cylinder, if the length is insufficient, other objects such as a hammer must be inserted and pulled. In some cases, the workers are exposed to the risk of safety accidents more seriously, and the efficiency of the pooling work is also significantly reduced.

The present invention was devised to solve the problems of the prior art as described above, and the present invention does not require the help of another person other than the operator even when the adapter needs to be connected, and the operator can easily fit the center between the adapter and the adapter alone. It is also an object of the present invention to provide an adapter of a hydraulic puller in which the adapter is mounted on the rod of the hydraulic cylinder so that the adapter does not come out even when a large pressure is applied to the adapter during the pulling operation.

 In addition, if the length of the adapter is insufficient even when the adapter is mounted on the rod of the hydraulic cylinder, the operator can adjust the length of the adapter by turning the screw joint without the need to insert another object such as a hammer, and perform the pulling work by himself. However, the object of the present invention is to provide a fuller adapter which is free from a risk of a safety accident and is significantly improved in work efficiency.

In order to achieve the above object, in the adapter of the puller screw adjustment adapter of the present invention is mounted on the rod connected to the cylinder of the puller to operate the hydraulic cylinder to pull out the coupling, gear, etc. in the adapter to adjust the length, A nut adapter 50 fixed to the rod by a tab; A bolt-type adapter 60 screwed to the nut-type adapter 50; It is characterized in that it comprises a plug-in adapter 70 is fitted to the bolt-type adapter (60).

In addition, in the present invention, the adapter may be used by connecting only one nut-type adapter 50, or may be used by connecting the nut-type adapter 50 to the bolt-type adapter 60, or the nut-type adapter 50 to the bolt-type adapter. Characterized in that it can be used to connect both up to 60 and insertable adapter 70,

In addition, when the length adjustment of the adapter is required in the present invention, it is possible to adjust the length of the adapter by turning the handle 62 of the bolt-type adapter 60 to the left or right.

According to the present invention as described above, when the adapter needs to be connected to the cylinder rod of the puller, the operator can be equipped with the adapter alone and adjust the length without the help of others.

In addition, the adapter can be mounted on the rod of the cylinder to prevent the adapter from being thrown out even when a large pressure is applied to the adapter during the pulling operation.

 In addition, if the length of the adapter is insufficient even if the adapter is mounted on the cylinder rod, there is no need to insert another object such as a hammer. The operator can adjust the length of the adapter by simply turning the screwing part, so even if the pooling work is performed alone There is no risk of a safety accident and the efficiency of the work is significantly improved.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

3 is a perspective view showing the overall shape of a puller in which the adapter of the present invention is used.

As shown in the figure, the hydraulic puller of the present invention has a structure in which two arms 18 are connected to each other through an arm connector 14 at one end of the cylinder 12, and has a lower end portion to facilitate movement of the puller itself. The trolley | bogie 19 is installed in the. The puller of the present invention grips an object to be pulled out by a hook installed in front of the arm 18 and operates the cylinder 12 by hydraulic lines and control means, so that the end of the rod 13 or an adapter coupled to extend it ( The end of 20) is pressed against the shaft to pull the object of the pulling operation out of the shaft. In Figure 3 the adapter is provided on the bogie, if the length adjustment of the rod is to be taken out and mounted on the rod.

4 is a cross-sectional conceptual view showing that the nut-type adapter is mounted on the rod of the puller cylinder of the present invention. 5 is a cross-sectional conceptual view of the bolt adapter of the present invention. 6 is a cross-sectional conceptual view of the insertable adapter of the present invention.

4, a cylindrical rod 13 protruding therefrom is connected to a cylinder 12 connected to a hydraulic puller. The rod-shaped nut-type adapter 50 machined from the columnar is fixed to this rod 13. The front of the nut-type adapter 50 (hereinafter referred to as 'front' near the puller cylinder) is provided with a rod accommodating groove 51 having a size corresponding to the size of the rod 13. When connecting the nut type adapter 50 to the rod 13, first, the nut type adapter 50 is pushed into the rod 13, and then a tab hole formed at one side of the front circumferential surface of the nut type adapter 50 ( 53) and fix the tap tightly.

The back of the nut-type adapter 50 is provided with a bolt-type adapter receiving groove (52). The bolt-shaped adapter receiving groove 52 is formed so that its inner diameter is threaded so that the bolt-shaped adapter accommodating groove 52 can be screwed with the front portion of the bolt-type adapter 60 which will be described later.

As can be seen in Figure 5, the front portion of the bolt-shaped adapter 60 is provided with a threaded portion 61 also formed of a thread, the threaded portion 61 is a receiving groove ( 52) It is formed to fit the standard so that the bolt-type and nut-type adapters can be screwed together smoothly. The middle portion of the bolted adapter 60 has a knurling handle 62 protruding to facilitate screwing and length adjustment. The space portion 64 is formed to help the smooth coupling of the.

6 is a cross-sectional shape of the insertable adapter 70, in which a bolt-shaped adapter receiving groove 71 is formed in the front to accommodate the engaging surface 63 of the bolted adapter 60. As shown in FIG. The insertable adapter 70 surrounds and engages the engagement surface 63 of the bolted adapter 60.

In the above method of using the adapter, only one nut-type adapter 50 may be connected to the rod 13 of the cylinder, or the nut-type adapter 50 and the bolt adapter 60 may be connected and used. Alternatively, the nut-type adapter 50 may be used by connecting both the bolt-type adapter 60 and the insertable adapter 70. When the diameter of the shaft to which the coupling and the like are coupled is narrow, adapters suitable for the diameter of the shaft are selected and used. If the length of the adapter is required to adjust the length of the adapter by turning the handle 62 of the bolt-shaped adapter 60 to the left or right.

1 is a conceptual diagram of a general hydraulic puller.

Figure 2 is a cross-sectional conceptual view showing the shape of the adapter according to the prior art.

3 is a perspective view showing the overall shape of a puller in which the adapter of the present invention is used.

4 is a cross-sectional conceptual view showing that the nut-type adapter is mounted on the rod of the puller cylinder of the present invention.

5 is a cross-sectional conceptual view of the bolt adapter of the present invention.

6 is a cross-sectional conceptual view of the insertable adapter of the present invention.

♣ Explanation of symbols for main part of drawing ♣

DESCRIPTION OF SYMBOLS 2 Main body 4 Shaft 6 Gear 10 Puller 12 Cylinder 13 Rod 14 Arm connector 16 Connecting link 18 Arm 19 Bogie 20 First adapter 21 Rod accommodation groove 30 Second adapter

31: 1st adapter receiving groove 40: 3rd adapter 41: 2nd adapter receiving groove

52: Bolt type adapter receiving groove 53: Tap hole 50: Nut type adapter

60: bolt type adapter 61: threaded portion 62: handle portion 63: coupling surface 64: space 70: insertion type adapter 71: bolt type adapter receiving groove

Claims (3)

In the adapter for operating the hydraulic cylinder mounted on the rod connected to the cylinder of the puller to remove the coupling, gear, etc. from the shaft, A nut type adapter 50 fixed to the rod head by a tab; A bolt-type adapter 60 screwed to the nut-type adapter 50; Screw-type adapter of the puller, characterized in that it comprises a plug-in adapter 70 is fitted to the bolt adapter (60) The method according to claim 1, The adapter may be used by connecting only one nut type adapter 50, or may be used by connecting the nut type adapter 50 to the bolt type adapter 60, or the nut type adapter 50 to the bolt type adapter 60 and Screw-type adapter of the puller, characterized in that can be used to connect all up to the adapter 70 The method according to claim 1 or 2, If it is necessary to adjust the length of the adapter to adjust the length of the adapter by turning the body of the bolt-type adapter 60 to the left or right, the screw type adapter of the puller

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